iPod Need help!

[cubimex72]

I have a quiestion hope someone can help me resolve this problem. My step daughter has a nano i pod. She downloaded music from itunes as always. Now her screen of her i pod show a check mark and its is in disk mode. Can any body can tell me how to remove this from the Ipod so she can listen to her music.
Thanks

 

[-kritter-]

hold down the center select button and the menu button in the area of 6 seconds or until the screen goes blank to restart the ipod...